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تعداد نتایج: 931 فیلتر نتایج به سال:
The presence of an invisible substructure has previously been detected in the gravitational lens galaxy SDSSJ0946+1006 through its perturbation lensed images. Using flexible models for main halo and subhalo to fit images, we demonstrate that extraordinarily high central density steep slope. inferred concentration is well above expected scatter concentrations $\Lambda$CDM halos similar mass. We ...
BACKGROUND Most research on the seasonality of acute coronary syndrome (ACS) has been were reported from hospital-based data. We aimed to investigate the seasonal distribution of ACS in Beijing and to elucidate the relations between ACS occurrence and climatic parameters in a prehospital setting. METHODS We retrospectively reviewed the electronic prehospital medical records from the Beijing's...
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